guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
guywithgas wrote: John Wheeler wrote: guywithgas wrote:
Experts,
I am facing some issues while I resize my images to JPEG (specifically downsizing them to 800 pixels on the longer side ). The resulting JPEG is losing a lot of detail. I understand there will be some loss, the but I see a lot of reduction in quality. I tried all the algorithms that are there in the software and none of them are helping me. Please help me identify what I am doing wrong?
More context:
I use a Nikon Z9 and it has a higher mega pixel count. As RAW processing software, I use DXO Photolab 9. Considering the fact that it is a resonably high megapixel sensor and Photolab is a good raw processing software, I was using "Bilinear" mode for downsizing ("Biculbical" is good for upsizing). To my surprise, the resulting image lost a lot of detail.
My thoughts were, okay Z9 has a higher megapixel sensor. Ad the downsizing could result in loss of data as the pixel pitch is small and I am downsizing them. Let me try with a lower megapixel sensor. I have a D4S as well and that is a 16MP camera, far lower than the Z9. My thought process was with better pixel pitch, if I downsize I should get reasonably good output. surprisingly same, results or in some cases worse than what I found with my Z9.
To eliminate software influence, I converted the RAW files after processing and exported them to DNGs (with corrections applied) and used Affinity photo for downsizing. It has a couple of options more than the regular "biliner" & "bicubical" algorithms offered by Photolab. One of them gave me slightly better output, but pretty insignificant.
So, I am reaching out to the community for any suggestions. Other than asking me to use Photo Shop/Capture One. I like both of them and used them in the past, but would not use them due to their subscription only options anymore.
PS: The lens resolution is out of context, as I used one of the best Zeiss lenses available with me. Anyhow, irrespective of the lens resolution, the post processed RAW image looks excelled on my calibrated monitor.
Thanks,
Sreedhar.
Hi Sreedhar
I think it would really help if you post an example 800 pixel image that has the issue you mention. You have posted 800 pixel images in the WA forum and they look just fine. If you zoom in of course you can see the pixelization yet that size imge is not meant to be zoomed in and if you do only 2X.
If you problem only when downsizing from the Z9 or for only particular software or is it all the time.
This info will help in trying to track down the issue.
John Wheeler
Hello John,
Thanks for your time and reply.
The problem is with all software. Perhaps is it the limit, may be? Attached are the 2 photographs of the same edit, one with 5463 pixels (cropped in post for composition and downloaded) on the long edge and the other at 800 pixels. Both use Bicubic Sharper for resizing and Adobe RGB as profile.
Thanks,
Sreedhar.
HI @Sreehat
Actually I think the 800 px image is pretty good. I looked at several images on the W2 forum, and theirs are not better, other than their edges are a bit blurred (0.5 to 1.0 pixel blur). For you image, I took the 800 pixel image in Photoshop, added a duplicate Layer and set the Gaussian blur to 0.5 pixle, added a Layer mask set to all Black, and then just painted white around the edge of the phone and around high contrast app icons on the screen. I am attaching (I hope) the image below that I modified. By hidiing just some of the rought edges it does not catch the eye and is slightly more pleasing I think. Just wanted that option out there for you to consider:
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Sep 27, 2025 at 09:18 PM
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